With the increase in the axle load of railway vehicles and the increase in the speed of trains, as well as the development of urban rail transit and subways, elastic rail clips, as a key link in the track structure, are also undergoing continuous development, and their importance is also increasing. Concerned by all countries. China is a country with a vast territory and great differences in climate, transportation conditions, and regions. It needs various railway clips with different performance requirements to meet the requirements of different tracks and different types of tracks. For example, on conventional railway lines, rail clips with high buckling force and good elasticity are required to meet the needs of heavy-duty and high-speed lines; while in the viaduct track seamless line, in order to reduce the interaction force between the steel rail and the bridge, it is required The rail fastening system has low resistance and ensures that the elastic rail clips have sufficient elasticity, that is, to ensure that the railroad clips have a sufficiently low stiffness to ensure that the buckle pressure loss caused by the compression of the cushion under the rail when the train passes is small. The rail fastening system Not loose. It can be seen that although the elastic rail fastener is a small railway fastener, it is an important part of the railway track. Because of its high demand, about 7000 pieces per kilometer, its reliability is directly related to the safety of driving.